<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        h1 { color: #ff0000}
        h2 { color: #f0f }
        h3 { color: rgb(255,0,0) }
        h4 { color: rgba(255,0,0,0.2) }

        #d1 {
            background-color: purple;
            width: 200px;
            height: 200px;
            background-image: url("../b.jpg");
            background-size: 100px 100px;
            background-repeat: no-repeat; /*禁止重复*/
            background-position: 0px 100px; /*图片位置,根据图片左上角的坐标确定*/
        }
        #d2 {
            width: 611px;
            height: 376px;
            background-color: #E8E8E8;
            background-image: url("http://doc.canglaoshi.org/tstore_v1/images/itemCat/study_computer_img1.png");
            background-repeat: no-repeat;
            background-size: 318px 319px;
            background-position: 90px 80px;
        }
    </style>
</head>
<body>
    <div id="d1">背景图片测试</div>
    <div id="d2"></div>
    <h1>颜色测试</h1>
    <h2>颜色测试</h2>
    <h3>颜色测试</h3>
    <h4>颜色测试</h4>
</body>
</html>